LIETF TRADING BEHAVIOR DURING U.S. – CHINA TRADE WAR

Authors

  • Petko Stefanov Kalev Institute of Economics and Politics, The University of National and World Economy, Sofia, Bulgaria
  • Alex Lee Rosetta Institute, Sydney, Australia

DOI:

https://doi.org/10.2478/eoik-2025-0100

Keywords:

Leveraged and Inverse Exchange-Traded Fund (LIETF), Order imbalance, News reaction, Trend-chasing behavior, Trade informativeness, Sophisticated investors, U.S.-China trade war news

Abstract

This paper examines the trading behavior of investors in Leveraged and
Inverse Exchange-Traded Funds (LIETFs) during the early phase of the

U.S.–China tariff trade war, from January to November 2018. Using pan-
el data models, we analyze LIETF reactions to 17 trade-war news events

identified by China Briefing. The study focuses on the 12 most liquid
LIETFs tracking the S&P 500 and Nasdaq-100 indices, with trade and
quote data obtained from Reuters DataScope Select. Our first objective
is to test whether LIETF investors’ trading activity changes significantly
around trade-war announcements, and our results provide strong support
for this hypothesis. To further explore trading dynamics, we construct
two measures of abnormal activity—the abnormal buy–sell ratio and the

abnormal order imbalance—and test whether LIETF investors can pre-
dict subsequent market movements. We find little evidence of such pre-
dictive ability. Finally, we assess short-term momentum behavior: while

investors display trend-chasing in intraday intervals of less than 30 min-
utes, they tend to bet on reversals of the underlying indices over longer

intervals. Overall, this study contributes to understanding how investors
in leveraged products respond to geopolitical shocks. Given the growing

asset base of U.S.-listed LIETFs and the regulatory importance of inves-
tor behavior during periods of heightened uncertainty, our findings are

relevant to academics, practitioners, and market supervisors.

References

Ben-David, I., Franzoni, F., & Moussawi, R. (2018). Do ETFs increase volatility? The Journal of Finance,

(6), 2471–2535. https://doi.org/10.1111/jofi.12727

Black, F. (1975). Fact and fantasy in the use of options. Financial Analysts Journal, 31(4), 36–72. http://

www.jstor.org/stable/4477843

Bollerslev, T., Li, J., & Xue, Y. (2018). Volume, volatility, and public news announcements. The Review

of Economic Studies, 85(4), 2005–2041. https://doi.org/10.1093/restud/rdy003

Bown, C.P. (2021) The US–China trade war and phase one agreement. Journal of Policy Modeling

(4), 805–843. https://doi.org/10.1016/j.jpolmod.2021.02.009

Blume, E.M., MacKinlay, C. & Terker, B. (1989). Order imbalances and stock price movements on Octo-

ber 19 and 20, 1987. The Journal of Finance, 44(4), 827–848. https://doi.org/10.2307/2328612

Broman, M. (2016). Liquidity, style investing and excess comovement of exchange-traded fund re-

turns. Journal of Financial Markets, 30, 27–53. https://doi.org/10.1016/j.finmar.2016.05.002

Brown, D.C., Davies, S.W., & Ringgenberg, M.C. (2021). ETF arbitrage, non-fundamental demand, and

return predictability. Review of Finance, 25(4), 937–972. https://doi.org/10.1093/rof/rfaa027

Brown, P., Walsh, D. & Yuen, A. (1997). The interactions between order imbalance and stock price.

Pacific-Basin Finance Journal, 5, 539-557. https://doi.org/10.1016/S0927-538X(97)00019-X

Chan, K., Chung, Y. P., & Johnson, H. (1993). Why option prices lag stock prices: A trading‐based

explanation. The Journal of Finance, 48(5), 1957–1967. https://doi.org/10.2307/2329075

Charupat, N., & Miu, P. (2011). The pricing and performance of leveraged exchange-traded funds.

Journal of Banking and Finance, 35, 966–977. https://doi.org/10.1016/j.jbankfin.2010.09.012

Chen, Y., Fang, J., & Liu. D. (2023) The effects of Trump’s trade war on U.S. financial markets. Journal of

International Money and Finance, 134, 102842. https://doi.org/10.1016/j.jimonfin.2023.102842

Chordia, T., Roll, R. & Subrahmanyam, A. (2005). Evidence on the speed of convergence to market efficien-

cy. Journal of Financial Economics, 76(2), 271–292. https://doi.org/10.1016/j.jfineco.2004.06.004

Easley, D., O’Hara, M., & Srinivas, P. S. (1998). Option volume and stock prices: Evidence on where informed

traders trade. The Journal of Finance, 53(2), 431–465. https://doi.org/10.1111/0022-1082.194060

Eglīte, E., Štaermans, D., Patel, V., & Putniņš, T. J. (2023). Using ETFs to conceal insider trading.

SSRN Working Paper. https://ssrn.com/abstract=4343579.

Filippou, I., Gozluklu, A., & Rozental, H. (2024). ETF arbitrage and international diversification.

Journal of Banking and Finance, 168, 107274. https://doi.org/10.1016/j.jbankfin.2024.107274

Filippou, I., He, S., Li, S.Z., & Zhou, G. (2025). ETFs, anomalies and market efficiency. SSRN Work-

ing Paper. https://ssrn.com/abstract=4056260

Ge, L., Lin, T. C., & Pearson, N. D. (2016). Why does the option to stock volume ratio predict

stock returns? Journal of Financial Economics, 120(3), 601–622. https://doi.org/10.1016/j.

jfineco.2015.08.019

Glosten, L., Nallareddy, S., & Zou, Y. (2021). ETF activity and informational efficiency of underlying

securities. Management Science, 67(1), 22–47. https://doi.org/10.1287/mnsc.2019.3427

Gao, L., Han, Y, Li, S.Z., & Zhou, G. (2018). Market intraday momentum. Journal of Financial Economics,

(2), 394–414. https://doi.org/10.1016/j.jfineco.2018.05.009

Huang, S., O’Hara, M., & Zhong, Z. (2021). Innovation and informed trading: Evidence from in-

dustry ETFs. The Review of Financial Studies, 34(3), 1280–1316. https://doi-org.ez.library.

latrobe.edu.au/10.1093/rfs/hhaa077

Ivanov, I. T., & Lenkey, S. L. (2018). Do leveraged ETFs really amplify late-day returns and vola-

tility? Journal of Financial Markets, 41, 36–56. https://doi.org/10.1016/j.finmar.2018.09.001

Johnson, T. L., & So, E. C. (2012). The option to stock volume ratio and future returns. Journal of Financial

Economics, 106(2), 262–286. https://doi.org/10.1016/j.jfineco.2012.05.008

Lietf Trading Behavior During U.S.–China Trade War

Kalev, P.S., Wallace, D. 2024. Arbitrage opportunities in the EU stock markets at the open based on pre-

vious day US domiciled international ETFs. The Journal of Beta Investment Strategies, 15(2),

–32. https://doi.org/10.3905/jbis.2024.1.060

Koudelka, F., Sardinha, J., Shaw, K. Ibrahim, A., & Bernasek, A. (2025). State Street – ETFs outlook

for 2025: Global expansion continuous to accelerates. State Steet. https://www.statestreet.com/

ie/en/insights/etfs-2025-outlook

Kyle, A.S. (1985). Continuous auctions and insider trading. Econometrica, 53(6), 1315–1335. https://

doi.org/10.2307/1913210

Konish, L. 2024. Assets in U.S. exchange-traded funds topped $10 trillion. CNBC, published Decem-

ber 30, 2024, at 3:45 PM EST; updated December 31, 2024. https://www.cnbc.com/2024/12/30/

as-etf-assets-top-10-trillion-for-first-time-here-are-trends-to-watch.html

Lee, C., & Ready, M. (1991). Inferring trade direction from intra-day data. The Journal of Finance,

(2), 733–747. https://onlinelibrary.wiley.com/doi/full/10.1111/j.1540-6261.1991.tb02683.x

Li, Z., Sakkas, A., & Urquhart, A. (2022). Intraday time series momentum: Global evidence and links to market

characteristics. Journal of Financial Markets, 57, 100619. https://doi.org/10.1016/j.finmar.2021.100619

Li, M., & Zhao, X. (2014). Impact of leveraged ETF trading on the market quality of component

stocks. The North American Journal of Economics and Finance, 28, 90–108. https://doi.

org/10.1016/j.najef.2014.02.001

Li, F. W., & Zhu, Q. (2022). Short selling ETFs. The Review of Asset Pricing Studies, 12(4), 960–998.

https://doi-org.ez.library.latrobe.edu.au/10.1093/rapstu/raac005

Miller, E.M. (1977). Risk, uncertainty, and divergence of opinion. The Journal of Finance, 32(4), 1151-

https://doi.org/10.1111/j.1540-6261.1977.tb03317.x

Parkinson, M., (1980). The extreme value method for estimating the variance of the rate of return. The

Journal of Business, 53(1), 61–65. https://www.jstor.org/stable/2352357

Patel, V., Putniņš, T. J., Michayluk, D., & Foley, S. (2020). Price discovery in stock and options mar-

kets. Journal of Financial Markets, 47, 100524. https://doi.org/10.1016/j.finmar.2019.100524

Roll, R., Schwartz, E., & Subrahmanyam, A. (2010). O/S: The relative trading activity in options and

stock. Journal of Financial Economics, 96(1), 1–17. https://doi.org/10.1016/j.jfineco.2009.11.004

Shubber, K., & Henderson, R. (2020). US SEC opens door to more leveraged ETFs. Financial Times.

October 29. 2020. https://www.ft.com/content/2f44ab60-5fa5-4ec4-8fef-de4dfca44520

The Economist (2025). The latest investment fad is made for gamblers. Special Report | Speculation.

May 23, 2025 edition. https://www.economist.com/special-report/2025/05/23/the-latest-invest-

ment-fad-is-made-for-gamblers

Trainor, W. J. (2010). Do leveraged ETFs increase volatility. Technology and Investment, 1(3), 215–

https://doi.org/10.4236/ti.2010.13026

Tsekova, D., & Hajric, V. (2024). Gamblers are sinking billions into a leveraged market fringe.

Bloomberg. November 23, 2024. https://www.bloomberg.com/news/articles/2024-11-22/gam-

blers-are-sinking-billions-into-a-leveraged-market-fringe

Wallace, D. Kalev, P.S., & Lian, G. (2019). The evolution of price discovery in U.S. equity and derivatives

markets. Journal of Futures Markets 39(9), 1122–1136. https://doi.org/10.1002/fut.22019

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Published

2025-12-01

How to Cite

Petko Stefanov Kalev, & Alex Lee. (2025). LIETF TRADING BEHAVIOR DURING U.S. – CHINA TRADE WAR. ECONOMICS - INNOVATIVE AND ECONOMICS RESEARCH JOURNAL, 13(4), 381–398. https://doi.org/10.2478/eoik-2025-0100